VirtualBox 3.1 Beta 1

\* Teleportation (aka live migration); migrate a live VM session from one
machine to another
\* VM states can now be restored from arbitrary snapshots instead of only
the last one, and new snapshots can be taken from other snapshots as
well (aka branched snapshots)
\* 2D video acceleration for Windows guests; use the host video hardware
for overlay stretching and colour conversion
\* The network attachment type can be changed while a VM is running
\* Experimental USB support for OpenSolaris hosts making use of the latest
USB enhancements in Solaris Nevada 124 and higher
\* Signiﬁcant performance improvements for PAE and AMD64 guests (VT-x and
AMD-V only; normal (non-nested) paging)
\* Experimental support for EFI (Extended Firmware Interface)